Clutch mechanism for winding-drums



(No Model.)

J. A. DYBLIE 81; E. L. HEIDENREIOH.

CLUTCH MECHANISM FOR WINDING DRUMS.

No. 398,502; Patented Feb. 26, 1889.

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Warren Eritrea Parent @rricia JULIUS A. DYBLIE AND EYVIND LEE HEIDENREIOH, OF CHICAGO, ILLINOIS.

CLUTCH MECHANISM FOR WiNDlNG=DRUii/i'8.

SPECIFICATION forming part of Letters Fatent No. 898,502, dated February 26, 1889.

Application filed February 14, 1888- Serial No, 263,983. (No model.)

T0 aZZ whom it may concern:

Be it known that we, JULIUS A. DYBLIE and EYVIND LEE HEIDENREICH, citizens of the United States, residing at Ohicago,in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Clutch Mechanism for VindingDrums, of which we do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Our present invention has relation more particularly to the improvement of the clutch mechanism of such windin gdru ms as are com monly employed in connection with steamshovelssuch as are used for unloading grain from cars and the like-although it will be readily understood that the invention is applicable for use in a great variety of other situations where winding drums are employed.

The object oi? our invention is to provide improved mechanism whereby the windingdrum may be automatically thrown into and out of gear with the main drive-shaft; and to this end our invention consists in the various novel features of construction hereinafter de scribed, illustrated in the accompanying drawings, and particularly defined in the claims at the end of this specification.

1 Figure 1 is a view in side elevation (the hangers being shown in vertical section) of a wind ing-drum and clutch mechanism embodying our invention. Fig. 2 is a view in end elevation. Fig. 3 is a detail view in vertical section through the main drive-shaft adj acent the throw-off lever, the throw-oif lever and adjacent parts being shown in side elevation. Fig. t is a detail plan view of the longer arm of the operating-lever.

A and A designate suitable hangers or supports, wherein is journaled the main driveshaft B, on which is held in a manner free to slide the clutch-box C, the teeth a of which are adapted to engage with the corresponding teeth, (1, formed upon the end of the winding-drum D, that is loosely mounted upon the shaft, but is caused to rotate therewith when the teeth 0 of the clutch-box C are thrown into engagement with the corresponding teeth, cl, upon the end of the winding-drum. The lateral movement of the clutch-box C, which enables it to engage and disengage the winding-drum I), is effected by means of an operating-lever, E, preferably of elbow shape, the upper end of the shorter arm of this lever being yoke-shaped and connected by the pins or trunnions f with the ring F, that loosely fits within the grooved periphery of the clutch-box C; and to permit proper relative operation otthe clutch-box and operatinglevcr E the yoke-shaped ends of this lever are provided with oblong slots to receive the pins f.

The operating-lever E is sustained upon a rod or shaft, 0, that is journaled in the brackets to, depending from the hanger A, and that portion of the longer arm of this lever E which extends beneath the wimlii'ig-drum is divided to form an open. space, 6, through which will pass the lifting or load rope or cable G, that is wound between the flanges of the winding-drum D. Our purpose in thus forming the longer arm of the operating-lever E with the space or opening 6 therein beneath the winding-drum is to afford a ready means for effecting the lifting of the lever by the engagement therewith of the washer 9, that is held upon the rope or cable G and bears against the ball g, that is fixed upon or within the rope, and it is obvious that in order to enable the rope G to lift the longer arm of the operating-lever E the washer g is made somewhat larger than the space formed in the lever through which the rope or cable passes. From the construction, as thus far defined, it will be seen that when the rope or cable G has been wound upon the drum D to such extent that the washer g is forced by the ball g of the rope into engagement with the operatinglever E the longer arm of this lever E will be lifted, thereby causing its shorter arm to throw the clutch-box or sleeve C away from the winding-drum, and consequently disengage the teeth 0 of the clutch-box from the corresponding teeth of the drum. The end of the longer arm of the operating-lever E is sustained when in its lowest position by means of the shoulder 75, formed near the lower end of the dependent arm or bracket K, and over the inclined edgek of the bracket K the lever is caused to ride'as it is drawn upward by the engagement of the ball upon the winding-rope, and when the lever is to retain the of which the operating-lever E is formed will be sufficiently flexible and elastic to permit the outer end of the long arm of the lever to 1 be drawn over the face L of the dependent arm or bracket K and spring into the notch above the shoulder le By preference there is attached to the side of the arm or bracket K a pivoted dog, L, sustained upon-the journal-pin Z, that passes through the arm K, this dog being pivoted off its center in such manner that the excess weight of its rear end will tend to hold it normally in the position indicated by dotted lines in Fig. 2that is to say, with its front end parallel with and extending above the shoulder 73 of the arm or bracket K and obstructing the entrance of the operating-lever E into the space above the shoulder k It will therefore be seen that as the operating-lever E is drawn upward by the ball of the load rope. or cable the outer end of this lever will ride upward upon the inclined face 7c of the arm or bracket K and will be prevented from springing into the notch formed in this arm orbracket above the shoulder 7.; until after the lever has passed above the inner end of the dog L, when it will be free to spring inward, and as the load rope or cable is drawn backward or unwound from the drum D it will depress the inner end of the dog L until the lever E rests upon the shoulder Our purpose in thus employing the pivoted dog L will hereinafter more fully ap-' pear. lever is in the elevated position last described, and the clutch-box C is out of engagement with the windingdrum, it is obvious that the load rope or cable G can be drawn'baclnvard until the shovel or other load-carrier at the end of this rope is in position to receive its new lead, and when in such position the clutchbox G will be automatically thrown into engagement with the winding-drum by the operation of the following mechanism: Upon the driving-shaft B and affixed to the winding-drum D is a smaller drum or cylinder, 0, upon which is wound the rope O, which, for convenience, I term the engagement-rope, and which passes over a suitable pulley, and is provided at its outer end with a counter-weight, O and it is obvious from this construction that as the load-rope G is drawn backward and unwound from the drum D the engagement-rope 0 will be wound upon the pcriphery of the smaller drum, 0, the counterweight O being correspondingly lifted. Upon the outer end of the smaller drum, 0, is formed the flange 0, to the outside face of which is pivoted the pawl P, that is held in engagement with the teeth of the ratchet-wheel R by means of a suitable spring, p, also affixed to the side of the flange 0. This ratchet-wheel R is loosely mounted on the main drive- After the outer end of' the operating shaft B, and affixed to this ratchet-wheel or formed therewith is the cam S, which at the proper time will engage with the longer arm, t, of the throw-off lever T, that is plvoted upon a pin, ll, extending through the dependent arm or bracket K, this throw-off lever T being formed with the counter-weight t', wh1 ch serves to hold it normally in the posit on indicated by dotted lines in Fig. 3,in which position the shorter end, 1?, of the throw-off lever will be approximately in line with the outer end of the pivoted dog 11.

From the foregoing description it willbe seen that if the parts are in the posit-ion indicated by full lines in the drawings the loadroad or cable G can be unwound from the winding-diann D until the shovel or other load-carrier is at the proper point to receive its load, and during this unwinding of the load-rope G the engagement-rope 0' will be wound upon its drum O, thus lifting the counter-weight O to the position shown in the drawings. \Vhen the load rope or cable G has been thus unwound it will be found that if this rope G be now slackened somewhat, as by the act of advancing the shovel into the grain, the counter-weight 0 attached to the engagement-rope 0, will cause a revolution in whole or in part of its drum 0, and by means of the pawl P and ratchetwheel R will cause the cam S to revolve and engage with the longer arm, 25, of the throw-off lever T, thereby moving the lever to the position shown by dotted lines in Fig. 3, and cansing the shorter end, 1?, of this lever to push the longer arm of the operating-lever E off the shoulder k thus permitting it to drop onto the shoulder 75, thereby causing the clutch-box C to be thrown into engagement with the winding-drum D hen the clutchbox C is thus thrown into engagement with the winding-drum D, it is plain that this drum will be forced to rotate with the drive-shaft B, and will again wind the load rope or cable G until the shovel or other load-carrier is drawn forward or upward, and this operation will continue until the ball g has forced the washer g into engagement with the divided portion of the operating-lever E and has so lifted this lever as to throw the clutch-box C out of engagement with the winding-drum. It will now be understood that by providing the pivoted dog L, the outer end of which obstructs the space above the shoulder 70 of the dependent arm or bracket K, the operatinglever E will be prevented from entering the space above the should er k and consequently all danger of this lever springing inward and throwing the long arm tof the throw-off lever T into position to be struck by the cam S will be avoided until the clutch-box has with cert-ainty been disengaged from the windingdrum and until the lifting-rope G has been unwound and sufficiently slackened to permit the re-engagemcnt of the clutch with the winding-drum.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is

1. The combination, with the winding-drum having teeth on its hub, a clutch-box for engagement with said hub, and a load-rope provided with a suitable stop, of a pivoted elbowlever, E, one arm of which is connected directly with and is adapted to move in the same direction as the clutch-box, and the opposite arm of which extends across the winding-drun1 and is provided with an open space, e, adapted to engage with the stop on the load-rope, substantially as described.

2. The combination, with a winding-drum having teeth upon its hub, a clutch-box for said drum, and a winding-rope provided with a suitable stop, of an operating-lever adapted to engage said stop of the winding-rope, a suitable arm or bracket for engaging said operating-lever, a cam connected with and controlled by the movement of said windingdrum, and a throw-off lever having one arm extending into the path of said cam and having its opposite arm arranged to move the op crating-lever for throwing the clutch-box into engagement with the wimling-drum, substantially as described.

3. The combination, with a winding-drum having teeth on its hub and its clutch-box, of an operating-lever connected with said clutchhoX, a suitable dependent arm or bracket for sustaining said operating-lever in elevated position, a throw-off lever for releasing said operating-lever, a cam for moving said throwoff lever, a ratchet-wheel for controlling the movement of said cam, and an engagement rope and its winding-drum having a pawl for ett'ecting the movementot said ratellet-wheel, substantially as described.

4:. The combination, with a winding-drum having teeth on its hub and its clutch-box and a load-rope, of an operating-lever, E, a dependent arm or bracket, K, provided with a shoulder, 73, a counterweighted throw-off lever, T, a cam, .S, and ratchet-wheel R upon the main shaft, a pawl, P, engaging with said ratchet-wheel R, a drum, 0, and engagementrope O, and a couinter-weight, 0", substan tially as described.

5. The combination, with a,winding-drum having teeth on its hub and its clutch-box and "a load-rope, of an operating-lever, E, for controlling said clutch-bo.\', a dependent arm or bracket, K, having a shoulder, k a dog, L, to temporarily prevent the entrance of said operating-lever into the space above said shoulder, and suitable mechanism for throwing said operating-lever out of engagement with the shoulder It substantiallv as de seriliied.

JULIUs A. DYBLIE. EYVIND LEE HEIDENREIOH. \Vitne'sses:

GEO. P. FISHER, J12, BRUNO H. WELLER. 

